Why doesn't that job hunting kid have sense of preservation? While she and the school can't do anything to him, her family can behind the scenes. When she graduates, she could kneecap (figuratively) him for his rudeness as well. Plus, she really dislikes him and he makes no effort to change her opinion of him so if he even were to become her butler, it would crumble fast.
It's just confusing how he believes, without putting in the effort or thought for it, that he will be given the position.